Brake-shoe.



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- BRAKE SHOE. I APPLICATION FILED APR- "($916.

LQAM 1 Patentedfiept. 11, 191?.

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CHARLES W. ARMBR'UST, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, *TO THE AMERICAN BRAKE SHOE & FOUNDRY COMPANY; OF WILIVIIVGTON, DELA- WARE, A CORPORATION OF DELAWARE.

.BRAKE-SEOE.

To all 'wlmm'z't may concern:

1 Be it known that 1, CHARLES W. ARM- BRUsT, a citizen oftheUnited States, residing at Chicago, in the county of Cook and State'of Illinois, have invented a certain new and useful "Improvement in Brake- Shoes, of which the following is a full, clear, concise, and exact description, reference being had to the" accompanying drawings, forming a part of this specification.

My invention relates to brake shoesand has for its object the provision of an improved back for brake shoes which has advantages in construction and cheapness in the manufacture thereof. I My invention contemplates in its preferred form the provision of a plurality of fingers preferably drawn from the material ofthe back, which fingers coeperate to form akeylug.

My invention herein, more particularly as relating to Figurest and 5 is a continuation in part of my prior application. Serial No. 79,237, filed Feb. 19, 1916.- p

'I' will explain various forms which my invention may take morein detail by referring to the accompanyingdrawing illustrating the same,"inwhich Fig. 1 is a top view of a blank fora back; Fig." 2 is a perspective view showing the blank as formed into a finished back;

Fig. 3 is a top View of'a modified form of blank, and

Fig. 4 is a perspective view of the blank of Fig. 3 in its finished form.

- Referring more particularly to Figs. 1 and 2, I show a blank having the body portion 1 froin which four fingers 2, 3, 4 and 5 are adapted tobe drawn to form the key lug as shown more clearly in Fig. 2. Openings 6 and 7 are left so that metal ofthe shoe provided with cooperating notches 9and 10 respectively which form the key slot. When 1 drawn into the condition of Fig. 2 I have thus provided a key slot in which the lug s divided both transversely and longitudi- Specification of Letters Patent. Pateniggflfiept, 11 1 91?, Continuation in part of application Serial No."79,237, filed February 19, 1916.

' l 17, 1916. Serial No. 91,624..

i This application filed. April nally. A longitudinal opening is provided for the key. A transverse strip of metal 11 a proper union between the back and the shoe andin which the key lug is formed of two fingers 17 and 18 drawn transversely out of a portion of the metal of the back and from extending metal. Holes 19 are provided in the fingers to permit metal to pass therethrough for holding purposes. The fingers 17 and 18 are drawn substantl'oialllg as shown in Fig. 5 to form the finished From what has thus been described the nature of my invention will be readily clear to those skilled in the art. Having however thus described one form which my in vention may take, what I claim as new and desire to secure by Letters Patent is:

1. A back for a brake shoe having a plurality of pairs of longitudinally extending straps of material stamped therefrom to form a holding lug for said back.

2. A back for abrake shoe provided with a double lug, said lug comprising four tongues, two tongues being drawn from each end to a point at or adjacent thecenter of said back. 1

3. A back for a brake shoe provided with four lugs, said lugs each being formed of tonguesdrawn from the ends of said back to a point adjacent the center of said back. i 1

4L. A'back for a brake shoe provided with a double lug, said lug comprising four tongues drawn longitudinally from said back.

5. backfor' a brake shoe having two pairs of transverse lugs separated longitudinally of the shoe and transverse and longitudinal straps integral with said back located between the parts of said lugs.

6. back for a brake shoe 'h'aving'a four. part key lug being stamped from the body" ofthe back and the four parts of said lug cooperating to provide a key slot.

7. A back for a brake shoe having a four part key lug consisting of two pairs of tongues stamped from the body of theback.

8. back for abrake shoe having a four I part keylug, the four parts of said'lug being I stamped from the body of the back.

1 0.A back for a brake shoe having an undetached strap running centrally longitudinally of said shoe, an undetached strap substantially midway of said back transversely of said back and tongues stamped from said back between said straps and the edges of said back and spaced from. said edges. Y i

11, A back for a brake shoe having a four part lug 'formed of strips of metal drawn from said back. 7

'12. A back for a brake shoe provided with a double key lug, the two parts of which are on opposite sides of the center line of said -back,-a nd each consisting of two tongues drawn longitudinally from the body of the back, the remaining back portions having a 7 continuous arcuate form.

13. A back for a brake shoe provided with a. double key lug, the two parts of which are on'opposite sides of. the center line of. said back, said parts each consisting of two tongues drawn longitudinally from the ends of said back toward the center. llj. A back for a brake shoe 'provided'with two longitudinally alined lugs each consisting of two tongues drawn longitudinally from the said back, the remaining portions of the said back constituting a continuous arcuate strip. V r v 15. A back for a brake shoe provided with two longitudinally alined slotted lugs each consisting of two tongues drawnlongitudinally from the said back, the remaining portions of the said back constituting a continuous arcuate strip. V l

16. A back for a brake shoe provided with two lugs longitudinally alined and each it'orined of two tongues d-rawnf from; the said back without bending the remaining portions of said back, i a

17. A back for a brake shoe provided with two lugs longitudinally alinedi' formed of tongues drawn from the saidf'back without juntwisted bending'the remaining portions of'said back, said lugs being divided longitudinally.

. I8. I A' back for a brake: shoieprovi'ded with two. lugs. longitudinally. alined. formed of tonguesdrawn' from' the. said back-:iwithout bending the remaining portions of said back, said lugs being divided longitudinally and "s16tted,

19. A brake shoe having a fouifpartlu'g consi ting of integ al untvis ed tong e drawnfrom the body ofthe back.

20. A back for a brake shoe having a lug divided transversely and longitudinally,

21. A back; for a brake shoe proyided with i loublevhql ing lug, sa d c n s ing; .1 four ongu rawn. lo g tu na y i omthe body of the back, the space on opposite isides of sa d 1g ccup erig nally by h me l of sai t ng s he by he a d, ack; i astened, t0. h shoe o y- 22-. Ab ck r a brake h s r d a holding ug; h p ee e qun d;b lls finger f rm ng s d l g providingf ho s r f ening the be fi f efsh e o y; 1 A back f a b k shoe n inizcf a body strip providedwith a key lug forined of two tonguesdrawnfromthe body ofsaid Strip inthe same direction. V I l i "2%.. A hec cr mke hoeprovidedwith 1.: key lug f rm d of ngu s rawn from said back in the same direction. I [l 25. Aback for a brake shoe'consistin g of a body plat p vided wi i a ho ding- 11g formed of to gues drawn from said plate in the same direction. y

26. A back for-a brake shoe providedlwith a key lug, said lug consisting of four. untwisted fingersdrawn longitudinally outlof the body'of the back without bendingthe remaining portions-of the back,

27. A bdckfor a brakeshoe provided :with a key lug, said key lug consisting; of four fingers drawn longitudinally out of the body of the baclneach forming aper- -,ti 0n of said lug without bending #1 55 maining portions ofsaid back. i

28. A back for a brake shoe providedwith a key lug consisting of twoi pairs" choppe- 'sitely extending, untwisted fingers drawn longitudinally out of the body of'the back. A

In witness whereof, I. hereunto subscribe Witnesses;

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